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Abstract
The effects of liquid crystal (LC) material constants and cell parameters on electrooptic characteristics which control multiplexability of twisted nematic liquid crystal devices (TN-LCDs) were investigated on the basis of Δnd/Λ dependence. Computer simulations were carried out using Berreman's method, and some of the results were verified by experiments. Influence of dielectric and elastic constants on electrooptic characteristics were found to differ with Δnd, smaller Δe/e1, K22/K11 and K33/K11 ratios gave smaller threshold sharpness. Only a small change in low pretilt angles was sufficient to produce a large effect on threshold sharpness. Electrooptic characteristics were significantly influence by changes in settings of the polarizer and analyzer.